Oral presentation

[1I01-07] Environmental Dynamics 1

Wed. Sep 7, 2022 10:00 AM - 11:55 AM Room I (E1 Bildg.3F No.34)

Chair:Jun Goto(Niigata Univ.)

10:00 AM - 10:15 AM

[1I01] Investigation on distribution of radioactive substances in Fukushima

(1) Long-term transfer of radiocesium within the forest in Fukushima Prefecture

*Hiroaki Kato¹, Yuma Niwano¹, Hikaru Iida¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

10:15 AM - 10:30 AM

[1I02] Investigation on distribution of radioactive substances in Fukushima

(2) Estimation of the discharge pathway of dissolved Cs-137 in the forest headwater catchment in the high deposition area

*Yuma Niwano¹, Hiroaki Kato¹, Satoru Akaiwa¹, Donovan Anderson¹, Hikaru Iida¹, Miyu Nakanishi¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

10:30 AM - 10:45 AM

[1I03] Investigation on distribution of radioactive substances in Fukushima

(3) The Cs-137 vertical distribution in soil and tree roots in cedar forest in Fukushima Prefecture

*Satoshi Iguchi¹, Junko Takahashi ¹, Yuichi Onda¹, Hiroaki Kato¹ (1. Univ. of Tsukuba)

10:45 AM - 11:00 AM

[1I04] Investigation on distribution of radioactive substances in Fukushima

(4) Temporal changes in the vertical distribution of ¹³⁷Cs and its downward migration mechanisms in forest soils

*Junko Takahashi¹, Daichi Hihara¹, Takuya Sasaki¹, Satoshi Iguchi¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

11:00 AM - 11:15 AM

[1I05] Investigation on distribution of radioactive substances in Fukushima

(5) Effect of decontamination activities in the river basin on Cs-137 transferred downstream

*Yuichi Onda¹ (1. Univ. of Tsukuba)

11:15 AM - 11:30 AM

[1I06] Investigation on distribution of radioactive substances in Fukushima

(6) Dynamics of dissolved Cs-137 in streams and rivers in the Yamakiya district, Fukushima Prefecture, Japan

*Taichi Kawano¹, Yuichi Onda¹, Hiroaki Kato¹, Fumiaki Makino¹ (1. Univ. of Tsukuba)

11:30 AM - 11:45 AM

[1I07] Investigation on distribution of radioactive substances in Fukushima

(7)Modeling the Effect of Soil Moisture Content on the Variation of Air Dose Rate in Forests in Fukushima Prefecture

*Miyu Nakanishi¹, Yuichi Onda¹, Hiroaki Kato¹ (1. University of Tsukuba)

Time reserved for Chair （11:45 AM - 11:55 AM）

Oral presentation

[1I08-12] Environmental Dynamics 2

Wed. Sep 7, 2022 2:45 PM - 4:05 PM Room I (E1 Bildg.3F No.34)

Chair:Kazumasa Shimada(JAEA)

2:45 PM - 3:00 PM

[1I08] Investigation on distribution of radioactive substances in Fukushima

(8) Improvement of the MERCURY model and its application to the Fukushima

*Kazuyuki Sakuma¹, Masahiko Machida¹, Susumu Yamada¹, Hiroshi Kurikami¹ (1. JAEA)

3:00 PM - 3:15 PM

[1I09] Investigation on distribution of radioactive substances in Fukushima

(9) Current Status of Radiation Monitoring by KURAMA-II

*Minoru Tanigaki¹ (1. KYOTO UNIVERSITY)

3:15 PM - 3:30 PM

[1I10] Investigation on distribution of radioactive substances in Fukushima

(10) A Study of data analysis methods for a car-borne survey system, ASURA

*Jun Goto¹ (1. Niigata Univ.)

3:30 PM - 3:45 PM

[1I11] Investigation on distribution of radioactive substances in Fukushima

(11) On the characteristics of air dose rate distributions inside and outside of the Japanese wooden houses in Fukushima Prefecture

*Min sik Kim¹, Alex Malins¹, Masahiko Machida¹, Kazuya Yoshimura¹, Hiroko Yoshida ², Kimiaki Saito¹ (1. JAEA, 2. Tohoku Univ.)

3:45 PM - 4:00 PM

[1I12] Investigation on distribution of radioactive substances in Fukushima

(12) Representative dose reduction factors and their ranges for wooden houses by the air dose rate around each house and their sources of the variation

*Hiroko Yoshida¹, Minsik KIm², Masahiko Machida², Alex Malins² (1. Tohoku Univ., 2. JAEA)

Time reserved for Chair （4:00 PM - 4:05 PM）

Oral presentation

[1I13-17] Environmental Dynamics 3

Wed. Sep 7, 2022 4:05 PM - 5:30 PM Room I (E1 Bildg.3F No.34)

Chair:Takeyoshi Sunagawa(FUT)

4:05 PM - 4:20 PM

[1I13] Investigation on distribution of radioactive substances in Fukushima

(13) Evaluation of indoor dose reduction factor based on air dose rate measurement

*Rina Sato¹, Kazuya Yoshimura¹, Yukihisa Sanada¹, Tetsuro Sato², Tsubasa Mori², Marie Takagi² (1. JAEA, 2. Hitachi Solutions East Japan)

4:20 PM - 4:35 PM

[1I14] Investigation on distribution of radioactive substances in Fukushima

(14) Similarity of long-term temporal decrease in atmospheric Cs-137 between Chernobyl and Fukushima

*Yuko Hatano¹, Shu Mori¹, Eiichi Suetomi¹ (1. Graduate School of Systems and Information Engineering, University of Tsukuba)

4:35 PM - 4:50 PM

[1I15] Investigation on distribution of radioactive substances in Fukushima

(15) Decrease in Cs-137 inventory on paved surface

*Kazuya Yoshimura¹, Tomohisa Abe¹ (1. JAEA)

4:50 PM - 5:05 PM

[1I16] Investigation on distribution of radioactive substances in Fukushima

(16) Development of air dose rate temporal change model employing machine learning

*Kimiaki Saito¹, Masahiko Machida¹, Liu Xudong², Naoki Tanimura³ (1. JAEA, 2. BRIUG, 3. Mizuho Research & Technologies)

5:05 PM - 5:20 PM

[1I17] Investigation on distribution of radioactive substances in Fukushima

(17) Location Factors derived from UNSCEAR M2020 Dose Rate Dynamic Model

*Sakae Kinase^1,2, Kiichiro Uno¹, Emi Ojima¹, Seiichi Kanaizuka¹, Yoshiaki Shikaze¹, Masaki Andoh¹, Satoshi Mikami¹, Kimiaki Saito¹ (1. JAEA, 2. Ibaraki Univ.)

Time reserved for Chair （5:20 PM - 5:30 PM）

Oral presentation

[2I01-07] Radiation Measurement 1

Thu. Sep 8, 2022 10:00 AM - 11:55 AM Room I (E1 Bildg.3F No.34)

Chair:Hiromi Yamazawa(Nagoya Univ.)

10:00 AM - 10:15 AM

[2I01] Study on reaction mechanism of PVA-KI gel dosimeter (5)

*Yutaro Aoki¹, Glenn Harvel², Takeyoshi Sunagawa¹ (1. FUT, 2. Ontario Tech Univ.)

10:15 AM - 10:30 AM

[2I02] Design and simulation for a ⁹⁰Sr analysis apparatus based on quadrupole mass spectrometry, ion guide and ion trap

*Chao ZHANG¹, Shuichi HASEGAWA¹, Shintaro MARUYAMA¹, Ryohei TERABAYASHI¹, Yuta YAMAMOTO¹ (1. UTokyo)

10:30 AM - 10:45 AM

[2I03] Investigation of energy dependence for commercially available dosemeters based on the new operational quantities proposed by the ICRU.

*Hiroshi Yoshitomi¹, Tomoya Tsuji¹, Sho Nishino¹, Tomoyo Fukami¹, Yoshihiko Tanimura¹ (1. JAEA)

10:45 AM - 11:00 AM

[2I04] Light absorption in-situ measurement by X-ray irradiation to PVA-KI gel dose meter

*Takeyoshi Sunagawa¹, Glenn Harvel², Yutaro Aoki¹ (1. FUT, 2. Ontario Tech Univ.)

11:00 AM - 11:15 AM

[2I05] Development of a thermoluminescence measurement system using a spectrometer

*Misaki UESUGI¹, Tsugiko TAKASE¹, Katsuhiko YAMAGUCHI¹ (1. Fukushima Univ.)

11:15 AM - 11:30 AM

[2I06] Estimation of radiation source distribution from γ ray spectral data using machine learning

*Sota SUGA¹, Yuto KONDO¹, Tsugiko TAKASE¹, Katsuhiko YAMAGUCHI¹ (1. Fukushima Univ.)

11:30 AM - 11:45 AM

[2I07] Research and Development of an observation system for narrow areas in buildings using a small multi-legged mobile robot

Hiroyuki Shimano¹, *Takeshi Kakuto¹, Yuki Sato², Tatsuo Torii², Junsaku Nakajima², Tomoyoshi Hatakeyama³ (1. Shimano Co Ltd., 2. JAEA, 3. TAS Co Ltd.)

Time reserved for Chair （11:45 AM - 11:55 AM）

Oral presentation

[2I08-13] Radiation Measurement 2

Thu. Sep 8, 2022 2:45 PM - 4:20 PM Room I (E1 Bildg.3F No.34)

Chair:Yuko Hatano(Univ. of Tsukuba)

2:45 PM - 3:00 PM

[2I08] Development of a rapid measurement method for environmental tritium concentration

(1)Development of a Vacuum freeze drying apparatus for environmental tritium measurement

*Yamato Toyoda¹, Ryutaro Imai¹, Tomohiro Sakaguchi¹, Atsushi Tanaka¹, Koji Ishikawa¹, Tomohiko Kawakami¹ (1. KAKEN)

3:00 PM - 3:15 PM

[2I09] Development of a rapid measurement method for environmental tritium concentration

(2)Development of an electrolytic enrichment device for environmental tritium measurement

*Ryutaro Imai¹, Yamato Toyoda¹, Tomohiro Sakaguchi¹, Atsushi Tanaka¹, Koji Ishikawa¹, Tomohiko Kawakami¹ (1. KAKEN)

3:15 PM - 3:30 PM

[2I10] Development of a rapid measurement method for environmental tritium concentration

(3)Simplification and acceleration of environmental tritium measurement

*Daiki Namba¹, Takeru Hosone¹, Tomohiko Kawakami², Hideki Kakiuchi³, Yuji Torikai¹ (1. Ibaraki Univ., 2. KAKEN, 3. IES)

3:30 PM - 3:45 PM

[2I11] Development of a rapid measurement method for environmental tritium concentration

(4) Rapid screening method for tritium concentration in fish

*Takeru Hosone¹, Daiki Namba¹, Tomohiko Kawakami², Hideki Kakiuchi³, Yuji Torikai¹ (1. Ibaraki Univ., 2. KAKEN, 3. IES)

3:45 PM - 4:00 PM

[2I12] The continuous measurement of tritium assuming discgarge of ALPS treated water into the sea at Fukushima Daiichi Nuclear Power Station

*Hirofumi Yamamoto¹, Yuichiro Saito², Hitoshi Yoshida¹, Yoshihiro Yamamoto¹, Kazuo Taniguchi¹ (1. Techno Bridge, 2. SANWA Corporation)

4:00 PM - 4:15 PM

[2I13] Leaching of potassium and metakaolin based geopolymer and mechanical properties under electron irradiation

*Yaru Yang¹, Thi Mai Dung Do², Thi Chau Duyen Le⁴, Tadachika Nakayama¹, Gordon Thorogood³, Koichi Niihara¹, Hisayuki Suematsu¹ (1. Extreme Energy-Density Research Institute, Nagaoka University of Technology , 2. Department of Nuclear System Safety Engineering, Nagaoka University of Technology, 3. ANSTO, New Illawarra Rd, Lucas Heights, NSW, 2234, Australia , 4. Dandang University of Science and Technology,54 Nguyen Luong Bang, Lien Chieu, Danang City, Vietnam)

Time reserved for Chair （4:15 PM - 4:20 PM）

Oral presentation

[2I14-19] Radionuclides Migration

Thu. Sep 8, 2022 4:20 PM - 6:00 PM Room I (E1 Bildg.3F No.34)

Chair:Sakae Kinase(JAEA)

4:20 PM - 4:35 PM

[2I14] Study of the evacuation of residents in nuclear emergency

(1) The impact of shadow evacuation rates to evacuation time estimation

*Kazumasa Shimada¹, Kazuya Yamamoto¹, Shogo Takahara¹ (1. JAEA)

4:35 PM - 4:50 PM

[2I15] Simulation of Nuclear Accident Evacuation using MASSIVES (a Multi Agent Speedy Simulated Interactive Visual Evacuation System ) .

*Martin Andersson¹, Susumu Ryufuku¹, Hiroko Kido¹, Mitsuhiro Kanno¹, Naohiro Kurosawa¹ (1. V.I.C.)

4:50 PM - 5:05 PM

[2I16] Investigation of usefulness of vertical integrated concentration of radioactive materials in the atmosphere for nuclear disaster prevention use

*Koya Kajiwara¹ (1. Department of Integrated Energy Engineering, Graduate School of Engineering, Nagoya University)

5:05 PM - 5:20 PM

[2I17] Numerical model analysis of long-range atmospheric Pb-210 transport causing heavy deposition over Japan

*Hiromi Yamazawa¹, Tatsuya Matsumoto¹, Yu Cai² (1. Nagoya Univ., 2. Univ. Tokyo)

5:20 PM - 5:35 PM

[2I18] A Study on the Applicability of CFD Models for Atmospheric Diffusion under Various Stable Conditions to Administrative Regulations

*Gaku Sasaki¹, Jiro Yoneda¹ (1. Mitsubishi Heavy Industries, Ltd.)

5:35 PM - 5:50 PM

[2I19] Investigation on Simple Measurement for Evaluating Cesium Concentration in General Waste

*Kazuyuki Takase¹, Kouki Kokubun¹, Kazuaki Kusakabe¹ (1. Fukushima Prefectural Centre for Environmental Creation)

Time reserved for Chair （5:50 PM - 6:00 PM）

Sessions

VII. Health Physics and Environmental Science » Health Physics and Environmental Science

[1I01-07] Environmental Dynamics 1

(1) Long-term transfer of radiocesium within the forest in Fukushima Prefecture

(2) Estimation of the discharge pathway of dissolved Cs-137 in the forest headwater catchment in the high deposition area

(3) The Cs-137 vertical distribution in soil and tree roots in cedar forest in Fukushima Prefecture

(4) Temporal changes in the vertical distribution of 137Cs and its downward migration mechanisms in forest soils

(5) Effect of decontamination activities in the river basin on Cs-137 transferred downstream

(6) Dynamics of dissolved Cs-137 in streams and rivers in the Yamakiya district, Fukushima Prefecture, Japan

(7)Modeling the Effect of Soil Moisture Content on the Variation of Air Dose Rate in Forests in Fukushima Prefecture

[1I08-12] Environmental Dynamics 2

(8) Improvement of the MERCURY model and its application to the Fukushima

(9) Current Status of Radiation Monitoring by KURAMA-II

(10) A Study of data analysis methods for a car-borne survey system, ASURA

(11) On the characteristics of air dose rate distributions inside and outside of the Japanese wooden houses in Fukushima Prefecture

(12) Representative dose reduction factors and their ranges for wooden houses by the air dose rate around each house and their sources of the variation

[1I13-17] Environmental Dynamics 3

(13) Evaluation of indoor dose reduction factor based on air dose rate measurement

(14) Similarity of long-term temporal decrease in atmospheric Cs-137 between Chernobyl and Fukushima

(15) Decrease in Cs-137 inventory on paved surface

(16) Development of air dose rate temporal change model employing machine learning

(17) Location Factors derived from UNSCEAR M2020 Dose Rate Dynamic Model

[2I01-07] Radiation Measurement 1

[2I08-13] Radiation Measurement 2

(1)Development of a Vacuum freeze drying apparatus for environmental tritium measurement

(2)Development of an electrolytic enrichment device for environmental tritium measurement

(3)Simplification and acceleration of environmental tritium measurement

(4) Rapid screening method for tritium concentration in fish

[2I14-19] Radionuclides Migration

(1) The impact of shadow evacuation rates to evacuation time estimation

Authentication

(4) Temporal changes in the vertical distribution of ¹³⁷Cs and its downward migration mechanisms in forest soils